Qarah Kahriz DistrictQarah Kahriz District is in Shazand County, Markazi province, Iran. Its capital is the city of Shahbaz.HistoryAfter the 2006 National Census, Qarah Kahriz and Kuhsar Rural Districts were separated from the Central District in the establishment of Qarah Kahriz District. After the 2011 census, the village of Hafteh and Bazneh was elevated to city status as Shahbaz.DemographicsPopulationAt the time of the 2006 census, the district's population was 19,120 in 5,743 households. The 2016 census measured the population of the district as 18,119 inhabitants in 5,936 households.